Have a button or panel to see the database schema in a "user friendly" way

for example something like a dropdown menu when you click on "schema" it expands and display each tables and their structure (maybe in a first time no need to make fancy stuff, one <table> by table with one column with its name should be already quite useful)

No files, tests, or entry points are identified in the issue. Start by locating the project's demo or user interface and the existing SQLite schema-introspection entry point; done means users can open a schema control and view each table and its structure in a basic, usable panel.